get_device_id

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. It only states that it 'returns' a string device ID, but doesn't describe what the operation does (is it reading from system properties, hardware info, or configuration?), whether it requires permissions, if it's cached or real-time, or potential failure modes. For a tool with zero annotation coverage, this minimal description leaves critical behavioral aspects unspecified.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise with just two lines stating the action and return type. There's no wasted verbiage or unnecessary elaboration. However, the structure could be improved by front-loading more useful information - the current format feels more like a function signature than a helpful description for an AI agent.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 0 parameters, 100% schema coverage, and an output schema exists (implied by 'Returns: str: Device ID'), the description is minimally complete. However, for a tool with no annotations, it should provide more behavioral context about what a 'device ID' represents in this system and how it differs from related device information tools. The existence of an output schema reduces but doesn't eliminate the need for more complete context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has 0 parameters with 100% schema description coverage, so the schema fully documents the absence of inputs. The description appropriately doesn't waste space discussing nonexistent parameters. Since there are no parameters to explain, the baseline score of 4 is appropriate - the description correctly focuses on what the tool does rather than inputs it doesn't have.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Get the device ID' is a tautology that merely restates the tool name without adding meaningful context. It doesn't specify what type of device ID (hardware identifier, Android ID, serial number, etc.) or what system this retrieves from. While it distinguishes from siblings by focusing on device ID specifically, it lacks the specificity needed for a higher score.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided about when to use this tool versus alternatives. The description doesn't mention prerequisites, context for usage, or relationship to sibling tools like get_device_info or get_device_name that might provide overlapping or complementary information. The agent receives no help in determining when this specific tool is appropriate.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.